Improvement in hat-blocking macbones



JULIUS SHELDON, .OF NEW YORK, N. Y. Letters .Patent No. 89,601, dated May 4, 1869.

IMPROVEMENT IN HAT-BLOCKING- MACHINES.

The Schedule referred to in these Letters Patent and mak-ing part of the'saxpe.

To all 'whom it may concern.-

Be it known that I. J ULIUs SHELDON, of the city, county, and State of New York, have invented a new and useful Improrementin Hat-Blocking Machines; and I do hereby declare that the following is a clear and full description thereof', reference being had to the annexed drawings, which show, in various positions, that part of a blocking-machine which performs the blocking of the ment attached thereto.

A great diiculty'heretofore existed in those blocking-machines which stretch and form the crown of the hat, byexpansible bars, on account of the uneven stretch that the periphery of the crown receives by those bars, as the felt does not seem to stretch between the bars, but draws into the spaces, thus leaving the edge ofthe crown corrugated, as indicated by the red line in Figure 3, which ligure represents aplan view of the ends of those expansible bars.

My improvement is intended to obi-iate this, didiculty; and

It consists'in an elastic India-rubber cap, a, placed over the ends of the expansible bars b, as shown in Figure 1, which represents a vertical section of all crown of the Ahat, with my'improve-- those parts of the machine which perform the stretching ofthe crown, with the rubber cap a placed over the ends of the bars l.

This cap is made tot over the ends of said bars, when contracted, forming a continuous circumference. It is made thick enough all aroundv its cylindrical part to prevent the felt from drawing in between the bars, when the hat-body is placed over it, as shown in lig. 1, and the bars, rubber cap a, and felt expanded, as shown in Figure 2, the felt beingindicated by red lines in both these figures.

Figure 4 being a plan view of the ends of said bars, with the rubber cap on, expanded, shows, in red line, the shape of 'the crown of the hat, when 'said cap is applied. v

What I claim as. my invention, and desire to secure by Letters Patent, is

In combination with a hat-stretching or blocking machine, the continuous rubber cap a, applied substantially as and for the purpose set; forth.

JULIUS SHELDON:

Witnesses:

ALBERT H. HOOK, J ULIUs SCHUBERT. 

